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alexdok [17]
3 years ago
14

Why could the mass of argon be greater than the mass of potassium even though it has a lower atomic number?

Chemistry
1 answer:
lesya [120]3 years ago
6 0

The mass given on the periodic table is the weighted average of the abundance of isotopes. Because heavier isotopes (more neutrons) of argon are more abundant than potassium's, by pure statistics, argon will appear with a greater mass on the periodic table.


in easy way

we can also say :- Argon has  greater proportions of heavier isotopes with more neutrons than potassium.

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A piece of copper alloy with a mass of 85.0 g is heated from 30. °C to 45 °C. In the process, it absorbs 523 J of energy as heat
Ne4ueva [31]

Answer:

410.196 J/[kg*°C].

Explanation:

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2) the specific heat of copper is:

c=\frac{E}{m*(t_2-t_1)}; \ => \ c=\frac{523}{0.085*(45-30)}=\frac{523}{1.275}=410.196[\frac{J}{kg*C}].

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Katyanochek1 [597]

Answer:

0.912 mL

Explanation:

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From the reaction equation,

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